中国机械工程 ›› 2015, Vol. 26 ›› Issue (5): 611-619.

• 机械基础工程 • 上一篇    下一篇

浮动平底推杆凸轮机构的第Ⅱ类尺寸综合问题

李延平;林荣富;常勇   

  1. 集美大学,厦门,361021
  • 出版日期:2015-03-10 发布日期:2015-03-06
  • 基金资助:
    国家自然科学基金资助项目(51475209,51175224);福建省自然科学基金资助项目(2010J01302,2006J0169) 

Class Ⅱ Synthesis of Cam Mechanism with Floating Flat Faced Pushrod

Li Yanping;Lin Rongfu;Chang Yong   

  1. Jimei University,Xiamen,Fujian,361021
  • Online:2015-03-10 Published:2015-03-06
  • Supported by:
    National Natural Science Foundation of China(No. 51475209,51175224);Fujian Provincial Natural Science Foundation of China(No. 2010J01302,2006J0169)

摘要:

将德国进口高速印刷机机构中的滚子推杆推广至平底推杆演化构型,并以此为研究对象,引入“斜交浮动坐标系”、“支撑函数法”和“瞬时一维直线区段”及其投影得到的“瞬时区间套”等概念,进而提出求解推程区间套、回程区间套和整程区间套的方法。给出求解瞬时/整程平底方位线许用选择区域和凸轮基圆半径r0许用取值范围的基本原理,并推导得到其相应的通用解析公式,进而得到其解的存在性和存在性态的解析判据,最后搜索得到平底夹角的取值范围等。较圆满地解决了浮动平底推杆盘形凸轮机构的第Ⅱ类尺寸综合问题。
 

关键词: 浮动平底推杆, 斜交浮动系, 支撑函数, 瞬时一维直线区段, 瞬时/整程区间套, 存在性态

Abstract:

Based on the configuration of high-speed printing machine mechanism with flat faced pushrod imported from German which was the evolution of the one with roller pushrod, the conceptions of “skew floating coordinate system”, “support function” and the ideas of “instantaneous one dimensional linear section” and its projection (the instantaneous interval set) were developed. Then, the important concepts of interval set on the rise,interval set on the return and the whole interval set, and the basic principles of solving the allowable selection area of instantaneous/whole flat axis and allowable range of the cam radius r0 were proposed. Furthermore, the whole common analytical formulas were derived and the analytical criterion of the solution existence and its existing form were obtained. The solution scope of the flat angle were searched and presented. Lastly, the problem of class Ⅱ synthesis of cam mechanism with floating flat faced pushrod were solved successfully and satisfactory.

Key words: floating flat faced pushrod, skew floating coordinate system, support function, instantaneous one dimensional linear section; , instantaneous/whole interval set, existing form

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